Literally.
http://www.bbc.co.uk/news/science-environment-25126333
http://www.bbc.co.uk/news/science-environment-25126333
Quote:A gigantic "communal latrine" created at the dawn of the dinosaurs has been unearthed in Argentina.
Thousands of fossilised poos left by rhino-like megaherbivores were found clustered together, scientists say.
The 240-million-year-old site is the "world's oldest public toilet" and the first evidence that ancient reptiles shared collective dumping grounds.